3M™ Fastbond™ Insulation Adhesive 49 is a fast-drying adhesive that bonds a range fabrics and insulation materials to a range of substrates. Our permanent bond provides fast results to keep projects moving ahead. This adhesive’s formula is easy to dispense and apply directly onto surfaces and materials where needed, with no soak-in or yellowing over time.

Fast-Acting, Long Lasting
3M™ Fastbond™ Insulation Adhesive 49 is a long-time member of 3M’s portfolio of go-to, everyday-use adhesives considered by many to be necessary at the factory.

We designed 3M™ Fastbond™ Insulation Adhesive 49 to have an aggressive tack that offers a high initial grab as well as sufficient open time to position materials properly. High-solids content supports its low soak-in property, giving you ample time to align your insulation properly. This attribute also provides higher coverage than competing adhesives. The combination of fast tack, strong bond and clean appearance make it ideal for projects of all kinds.

Recommended Applications



Insulation installation

HVAC fiberglass insulation

Hanging fabric, felt, foam and more



Ideal for Your Insulation Application
3M™ Fastbond™ Insulation Adhesive 49 provides a clean, economical solution for installing insulation. This water-based adhesive is GREENGUARD™ certified and meets California and OTC state VOC requirements.

• Formulated for HVAC fiberglass insulation and more
• Offers a fast, aggressive tack for a quick, one-surface bond
• Permits immediate repositioning while providing long-lasting strength
• GREENGUARD™ and UL certified

• Color: Transparent